Fire prevention and extinguishment method of utilizing high-altitude drilling field for mining stop line of fully mechanized surface
A high-level drilling site and fire prevention technology, which is applied in the fields of earthwork drilling, fire prevention, dust prevention, etc., can solve the problems of safety hazards of fire prevention methods, inability to achieve precise fixed points, and poor fire prevention effects, so as to prevent spontaneous fire accidents , solve the difficulties and shortcomings, and achieve the effect of safe withdrawal
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Embodiment 1
[0031] A fire prevention and extinguishing method for the stop production line of fully mechanized caving face by using high-level drilling site:
[0032] Such as figure 1 As shown, the first high-level drilling site 2 and the second high-level drilling site 3 are respectively set within the range of 50 meters from the working face to the production stop line 1; the first high-level drilling site 2 is a new high-level drilling site, located in the In the trough; the second high-level drilling site 3 is the original high-level drilling site for gas drainage, located in the trough of the return air; in high-gas mines, the gas concentration at the working face far exceeds the concentration standard stipulated in the "Regulations" , it is difficult to control the gas concentration of the working face within the allowable range by simply using ventilation, so it is necessary to adopt the method of gas drainage to improve the safe production conditions of the mine and relieve the pr...
Embodiment 2
[0044] For the (4-5) 04 working face of Liuhuanggou Coal Mine, the fully mechanized top coal caving process is used for mining, which has high gas, spontaneous combustion, rock burst and other disasters, and U-shaped ventilation is used during the mining of the working face. The length of the working face is 180m, the average inclination angle is 23°, and 119 fully mechanized mining supports are installed; the average coal thickness of the working face is 6.15m, and the mining height is 3.0m. Started going online on June 19, 2017. The support stopped moving on June 25, and the retraction operation stopped on July 12. A total of 118 groups of belts, reloaders, crushers, coal shearers and some front and rear conveyors were removed. The hydraulic support, 12-section chute of the front conveyor, 42-section cable trough of the front conveyor, and 76-section middle chute of the rear conveyor have not been retracted. Due to the lack of withdrawing personnel, the (4-5)04 working face ...
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